(Phys.org) —Red on yellow, kill a fellow. Red on black, friend of Jack. That folk rhyme is supposed to help people distinguish venomous coral snakes from several non-venomous "mimics," animals that discourage ...

Performing experiments in a river in Trinidad, a team of evolutionary biologists has found that male guppies continue to reproduce for at least ten months after they die, living on as stored sperm in females, ...

It's not going to happen while you're peering through your binoculars, but African glossy starlings change color more than 10 times faster than their ancestors and even their modern relatives, according to ...

(Phys.org) —It is very annoying when colors fade over time, sometimes simply from exposure to light. In the journal Angewandte Chemie, Japanese scientists have now introduced a new type of colorfast, enviro ...

When a mouse smells a cat, it instinctively avoids the feline or risks becoming dinner. How? A Northwestern University study involving olfactory receptors, which underlie the sense of smell, provides evidence ...

Commercial laser printers typically produce pin-sharp images with spots of ink about 20 micrometers apart, resulting in a resolution of 1,200 dots per inch (dpi). By shrinking the separation to just 250 nanometers—roughly ...

(Phys.org) —Butterflies are among the most vibrant insects, with colorations sometimes designed to deflect predators. New University of Florida research shows some of these defenses may be driven by enemies one-tenth their ...

Iridescence, or sheen that shifts color depending on your viewing angle, is pretty in peacock feathers. But it's been a nuisance for engineers trying to mimic the birds' unique color mechanism to make high-resolution, reflective, ...

Red coloration—historically seen as costly in vertebrates—historically seen as costly in vertebrates—might represent some physiological benefit after all, according to research published in the journal Physiological an ...

Light emitting diodes, more commonly called LEDs, are known for their energy efficiency and durability, but the bluish, cold light of current white LEDs has precluded their widespread use for indoor lighting.

When it comes to camouflage, ground-nesting Japanese quail are experts. That's based on new evidence published online on January 17 in Current Biology that mother quail "know" the patterning of their own eg ...

With impressive specs, the Nexus 10 seems like a special tablet, at least on paper. When put through a real-world test, Google's latest tablet performed well for the price but not enough to brag about to ...